Stillen vs. Smoky: your take on intakes

Matt · 03-27-2010, 08:11 PM

Wow, good luck to anyone that wants to compete against Stillen's G3 gains....no one will believe you if you do!

nuTinmuch · 03-27-2010, 08:14 PM

Quote:

Originally Posted by Matt

Wow, good luck to anyone that wants to compete against Stillen's G3 gains....no one will believe you if you do!

It doesn't have to do with being Stillen -- people would be doing the same thing if it was Injen. It has more to do with it not being a CAI.

BalanBro · 03-27-2010, 08:38 PM

From a fluid dynamics standpoint, air/liquid passing through two tubes of equal diameter will experience less resistance in the shorter pipe (i.e. less of a pressure drop=more flow). The advantage of a CAI is pretty much limited to the cold air aspect alone.

As someone had alluded to, it is possible that the dyno setup may have provided sufficient airflow to keep warm air from entering the SRI (or perhaps the water temp was low enough that the thermostat was closed and the radiator didn't really heat the air).

Basically, an SRI can make more power, provided it is somehow shielded from incoming hot air. That said, I do not really see anything special about this design that makes it unique in this regard.

nuTinmuch · 03-27-2010, 09:28 PM

Quote:

Originally Posted by BalanBro

From a fluid dynamics standpoint, air/liquid passing through two tubes of equal diameter will experience less resistance in the shorter pipe (i.e. less of a pressure drop=more flow). The advantage of a CAI is pretty much limited to the cold air aspect alone.

As someone had alluded to, it is possible that the dyno setup may have provided sufficient airflow to keep warm air from entering the SRI (or perhaps the water temp was low enough that the thermostat was closed and the radiator didn't really heat the air).

Basically, an SRI can make more power, provided it is somehow shielded from incoming hot air. That said, I do not really see anything special about this design that makes it unique in this regard.

Yes, pretty much this.

Either it increases airflow greatly or reduces the temperature of the air into the engine which, as a side effect, increases air being received by it.

370Zsteve · 03-28-2010, 04:12 AM

Quote:

Originally Posted by BalanBro

From a fluid dynamics standpoint, air/liquid passing through two tubes of equal diameter will experience less resistance in the shorter pipe (i.e. less of a pressure drop=more flow). The advantage of a CAI is pretty much limited to the cold air aspect alone.

As someone had alluded to, it is possible that the dyno setup may have provided sufficient airflow to keep warm air from entering the SRI (or perhaps the water temp was low enough that the thermostat was closed and the radiator didn't really heat the air).

Basically, an SRI can make more power, provided it is somehow shielded from incoming hot air. That said, I do not really see anything special about this design that makes it unique in this regard.

From what I have read about the Gen3, the length and bend of the tubes promotes smoother airflow at the MAF, negating your comment about resistance in the shorter pipe.

BalanBro · 03-28-2010, 10:27 PM

Quote:

Originally Posted by 370Zsteve

From what I have read about the Gen3, the length and bend of the tubes promotes smoother airflow at the MAF, negating your comment about resistance in the shorter pipe.

It is possible that the longer tube could have smoother airflow further down the pipe, but it will still experience more resistance (i.e. a greater pressure drop as measured from the inlet and outlet of the intake tube). Smoother air flow does not necessarily mean MORE air flow, but it typically leads to a much more stable and accurate reading from the MAF.

A short tube, as in an SRI, is more tempermental to MAF location, and proper spacing from the filter/inlet is very important to avoid the turbulence created at the pipe inlet. This could be one reason why the other SRI systems have not fared so well.

370Zsteve · 03-29-2010, 11:12 AM

Quote:

Originally Posted by BalanBro

It is possible that the longer tube could have smoother airflow further down the pipe, but it will still experience more resistance (i.e. a greater pressure drop as measured from the inlet and outlet of the intake tube). Smoother air flow does not necessarily mean MORE air flow, but it typically leads to a much more stable and accurate reading from the MAF.

A short tube, as in an SRI, is more tempermental to MAF location, and proper spacing from the filter/inlet is very important to avoid the turbulence created at the pipe inlet. This could be one reason why the other SRI systems have not fared so well.

Thanks, Belan. Ya, I didn't mean there would be more flow by any means. I wish I could locate the article about the long-tubes, it was not in a Stillen press release, but rather a 3rd-party source in an online article I stumbled on. It also mentioned that the shape of the bend coming around to the filters was crucial for the smother flow.

I'm beginning to think Semtex may be right and that Smoky put a Turbonator in the unit.

Red370 · 03-27-2010, 10:05 PM

Quote:

Originally Posted by nuTinmuch

It doesn't have to do with being Stillen -- people would be doing the same thing if it was Injen. It has more to do with it not being a CAI.

Exactly, it has nothing to do with brand, it has EVERYTHING to do with it being a CAI against a hot air sucker AKA SR intake.

370Zsteve · 03-28-2010, 04:10 AM

Quote:

Originally Posted by Matt

Wow, good luck to anyone that wants to compete against Stillen's G3 gains....no one will believe you if you do!

LOL it's maaagic

My take: My knowledge of Smokey (Smoky?) is very limited, but I know one thing...he took his name as homage to Smokey Yunick, the legendary NASCAR engine builder. This new Smokey had better be as good as his name suggests.

This thread should become epic. In for updates.

View Poll Results: Which intake do you think will come out on top?
Stillen G3	73	47.40%
Top Secret	48	31.17%
They will be essentially equal in HP gain.	33	21.43%
Voters: 154. You may not vote on this poll

03-27-2010, 08:11 PM	#1 (permalink)
Matt A True Z Fanatic Join Date: Oct 2009 Location: Augusta, GA Age: 43 Posts: 1,680 Drives: 2010 Avalanche LT Rep Power: 21	Wow, good luck to anyone that wants to compete against Stillen's G3 gains....no one will believe you if you do! __________________ "Any man who can drive a 370z while kissing a pretty girl is simply not giving the Z the attention it deserves." Albert Einstein....modified.

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03-27-2010, 08:38 PM	#3 (permalink)
BalanBro Enthusiast Member Join Date: Apr 2009 Location: NJ Posts: 318 Drives: 40th Anniv. 370Z Rep Power: 1113	From a fluid dynamics standpoint, air/liquid passing through two tubes of equal diameter will experience less resistance in the shorter pipe (i.e. less of a pressure drop=more flow). The advantage of a CAI is pretty much limited to the cold air aspect alone. As someone had alluded to, it is possible that the dyno setup may have provided sufficient airflow to keep warm air from entering the SRI (or perhaps the water temp was low enough that the thermostat was closed and the radiator didn't really heat the air). Basically, an SRI can make more power, provided it is somehow shielded from incoming hot air. That said, I do not really see anything special about this design that makes it unique in this regard.